3. It's just a terrible case of solar indigestion.
In 1859, electric disruptions from a solar flare caused fires to start in telegraph wires—A.K.A., the OG smartphone. Our dependence on modern gadgets makes these events scary enough. Always remember: Your next status update could be your last.
But it gets worse. A turbulent day on the sun involving a coronal mass ejection could also shut down every single electric grid. If those stayed down for long enough, nuclear power plants around the world would not be able to cool down their reactors. That would mean game over for us. Best case scenario? You survive. If you do, we recommend you designate people with specific responsibilities to make continued existence possible: shelter, water, candy, laundry, etc. Also, maximizing the distance between you and the blast might help. Good luck with that.